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Grigoriev MS, Charushnikova IA, Budantseva NA, Fedoseev AM. Mixed-Valence Np V/An VI Molybdate Complexes with Single-Charge Outer-Sphere Cations. Inorg Chem 2023; 62:12708-12720. [PMID: 37504518 DOI: 10.1021/acs.inorgchem.3c01098] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 07/29/2023]
Abstract
Five new mixed-valence NpV/AnVI molybdates of the composition [C(NH2)3]3[(NpVO2)(NpVIO2)(MoO4)3(H2O)]·H2O (1), [C(NH2)3]3[(NpVO2)(NpVIO2)(MoO4)3(H2O)]·3H2O (2), Na3[(NpVO2)(PuVIO2)(MoO4)3(H2O)]·nH2O (3), Na6[(NpVO2)2(UVIO2)(MoO4)5]·13H2O (4), and LiNa2[(NpVO2)(NpVIO2)2(MoO4)4(H2O)]·4H2O (5) have been synthesized and structurally characterized. The coordination polyhedra of the NpV and AnVI atoms in compounds 1-5 are pentagonal bipyramids. The basis of structures 1-3 is anionic layers of the composition [(NpVO2)(AnVIO2)(MoO4)3(H2O)]n3n-. Three crystallographically independent molybdate ions are tridentate-bridging ligands. The water molecule, which is a part of the anion layer, is coordinated to the NpV atom. The anionic layers in complexes 2 and 3 have the same structure, different from 1. The basis of structure 4 is anionic layers of the composition [(NpVO2)2(UVIO2)(MoO4)5]n6n-, the structure of which differs from the structure of anionic layers in 1-3. Complex 5 has a three-dimensional (3D) structure. The spectra of all compounds in the UV-visible and IR ranges were measured and analyzed.
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Affiliation(s)
- Mikhail S Grigoriev
- Frumkin Institute of Physical Chemistry and Electrochemistry, Russian Academy of Sciences, Moscow 119071, Russian Federation
| | - Iraida A Charushnikova
- Frumkin Institute of Physical Chemistry and Electrochemistry, Russian Academy of Sciences, Moscow 119071, Russian Federation
| | - Nina A Budantseva
- Frumkin Institute of Physical Chemistry and Electrochemistry, Russian Academy of Sciences, Moscow 119071, Russian Federation
| | - Alexander M Fedoseev
- Frumkin Institute of Physical Chemistry and Electrochemistry, Russian Academy of Sciences, Moscow 119071, Russian Federation
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2
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Pavel OD, Stamate AE, Zăvoianu R, Cruceanu A, Tirsoaga A, Bîrjega R, Brezeștean IA, Ciorîță A, Culiță DC, Dias APS. Mo-LDH-GO Hybrid Catalysts for Indigo Carmine Advanced Oxidation. MATERIALS (BASEL, SWITZERLAND) 2023; 16:3025. [PMID: 37109860 PMCID: PMC10142217 DOI: 10.3390/ma16083025] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 02/16/2023] [Revised: 03/29/2023] [Accepted: 04/08/2023] [Indexed: 06/19/2023]
Abstract
This paper is focused on the utilization of hybrid catalysts obtained from layered double hydroxides containing molybdate as the compensation anion (Mo-LDH) and graphene oxide (GO) in advanced oxidation using environmentally friendly H2O2 as the oxidation agent for the removal of indigo carmine dye (IC) from wastewaters at 25 °C using 1 wt.% catalyst in the reaction mixture. Five samples of Mo-LDH-GO composites containing 5, 10, 15, 20, and 25 wt% GO labeled as HTMo-xGO (where HT is the abbreviation used for Mg/Al in the brucite type layer of the LDH and x stands for the concentration of GO) have been synthesized by coprecipitation at pH 10 and characterized by XRD, SEM, Raman, and ATR-FTIR spectroscopy, determination of the acid and base sites, and textural analysis by nitrogen adsorption/desorption. The XRD analysis confirmed the layered structure of the HTMo-xGO composites and GO incorporation in all samples has been proved by Raman spectroscopy. The most efficient catalyst was found to be the catalyst that contained 20%wt. GO, which allowed the removal of IC to reach 96.6%. The results of the catalytic tests indicated a strong correlation between catalytic activity and textural properties as well as the basicity of the catalysts.
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Affiliation(s)
- Octavian Dumitru Pavel
- Department of Inorganic Chemistry, Organic Chemistry, Biochemistry and Catalysis, Faculty of Chemistry, University of Bucharest, 4-12 Regina Elisabeta Bd., 030018 Bucharest, Romania
- Research Center for Catalysts & Catalytic Processes, Faculty of Chemistry, University of Bucharest, 4-12 Regina Elisabeta Bd., 030018 Bucharest, Romania
| | - Alexandra-Elisabeta Stamate
- Department of Inorganic Chemistry, Organic Chemistry, Biochemistry and Catalysis, Faculty of Chemistry, University of Bucharest, 4-12 Regina Elisabeta Bd., 030018 Bucharest, Romania
- Research Center for Catalysts & Catalytic Processes, Faculty of Chemistry, University of Bucharest, 4-12 Regina Elisabeta Bd., 030018 Bucharest, Romania
| | - Rodica Zăvoianu
- Department of Inorganic Chemistry, Organic Chemistry, Biochemistry and Catalysis, Faculty of Chemistry, University of Bucharest, 4-12 Regina Elisabeta Bd., 030018 Bucharest, Romania
- Research Center for Catalysts & Catalytic Processes, Faculty of Chemistry, University of Bucharest, 4-12 Regina Elisabeta Bd., 030018 Bucharest, Romania
| | - Anca Cruceanu
- Department of Inorganic Chemistry, Organic Chemistry, Biochemistry and Catalysis, Faculty of Chemistry, University of Bucharest, 4-12 Regina Elisabeta Bd., 030018 Bucharest, Romania
- Research Center for Catalysts & Catalytic Processes, Faculty of Chemistry, University of Bucharest, 4-12 Regina Elisabeta Bd., 030018 Bucharest, Romania
| | - Alina Tirsoaga
- Research Center for Catalysts & Catalytic Processes, Faculty of Chemistry, University of Bucharest, 4-12 Regina Elisabeta Bd., 030018 Bucharest, Romania
| | - Ruxandra Bîrjega
- National Institute for Lasers, Plasma and Radiation Physics, 409 Atomistilor Street, 077125 Măgurele, Romania
| | - Ioana Andreea Brezeștean
- National Institute for Research and Development of Isotopic and Molecular Technologies, 67-103 Donat Street, 400293 Cluj-Napoca, Romania
| | - Alexandra Ciorîță
- National Institute for Research and Development of Isotopic and Molecular Technologies, 67-103 Donat Street, 400293 Cluj-Napoca, Romania
- Electron Microscopy Centre, Faculty of Biology and Geology, Babes-Bolyai University, 44 Republicii Street, 400015 Cluj-Napoca, Romania
| | - Daniela Cristina Culiță
- Ilie Murgulescu Institute of Physical Chemistry, 202 Splaiul Independentei, 060021 Bucharest, Romania
| | - Ana Paula Soares Dias
- CERENA, Instituto Superior Técnico, Universidade de Lisboa, 1 Rovisco Pais Av., 1049-001 Lisboa, Portugal
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3
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Mohamed MA, Arnold S, Janka O, Quade A, Presser V, Kickelbick G. Self-Activation of Inorganic-Organic Hybrids Derived through Continuous Synthesis of Polyoxomolybdate and para-Phenylenediamine Enables Very High Lithium-Ion Storage Capacity. CHEMSUSCHEM 2023; 16:e202202213. [PMID: 36542465 DOI: 10.1002/cssc.202202213] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/29/2022] [Revised: 12/16/2022] [Indexed: 06/17/2023]
Abstract
Inorganic-organic hybrid materials with redox-active components were prepared by an aqueous precipitation reaction of ammonium heptamolybdate (AHM) with para-phenylenediamine (PPD). A scalable and low-energy continuous wet chemical synthesis process, known as the microjet process, was used to prepare particles with large surface area in the submicrometer range with high purity and reproducibility on a large scale. Two different crystalline hybrid products were formed depending on the ratio of molybdate to organic ligand and pH. A ratio of para-phenylenediamine to ammonium heptamolybdate from 1 : 1 to 5 : 1 resulted in the compound [C6 H10 N2 ]2 [Mo8 O26 ] ⋅ 6 H2 O, while higher PPD ratios from 9 : 1 to 30 : 1 yielded a composition of [C6 H9 N2 ]4 [NH4 ]2 [Mo7 O24 ] ⋅ 3 H2 O. The electrochemical behavior of the two products was tested in a battery cell environment. Only the second of the two hybrid materials showed an exceptionally high capacity of 1084 mAh g-1 at 100 mA g-1 after 150 cycles. The maximum capacity was reached after an induction phase, which can be explained by a combination of a conversion reaction with lithium to Li2 MoO4 and an additional in situ polymerization of PPD. The final hybrid material is a promising material for lithium-ion battery (LIB) applications.
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Affiliation(s)
- Mana Abdirahman Mohamed
- Inorganic Solid-State Chemistry, Saarland University, Campus C4 1, 66123, Saarbrücken, Germany
| | - Stefanie Arnold
- INM-Leibniz Institute for New Materials, 66123, Saarbrücken, Germany
- Department of Materials Science and Engineering, Saarland University, 66123, Saarbrücken, Germany
| | - Oliver Janka
- Inorganic Solid-State Chemistry, Saarland University, Campus C4 1, 66123, Saarbrücken, Germany
| | - Antje Quade
- Leibniz Institute for Plasma Science and Technology, Felix-Hausdorff-Straße 2, 17489, Greifswald, Germany
| | - Volker Presser
- INM-Leibniz Institute for New Materials, 66123, Saarbrücken, Germany
- Department of Materials Science and Engineering, Saarland University, 66123, Saarbrücken, Germany
- Saarene-Saarland Center for Energy Materials and Sustainability, 66123, Saarbrücken, Germany
| | - Guido Kickelbick
- Inorganic Solid-State Chemistry, Saarland University, Campus C4 1, 66123, Saarbrücken, Germany
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4
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Neethu PP, Sakthivel A. Esterification of biomass-derived levulinic acid using molybdate-intercalated hydrotalcite materials. NEW J CHEM 2022. [DOI: 10.1039/d2nj03625h] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The molybdate-stabilized MgFe-HT is demonstrated as a potential catalyst for levulinic acid esterification with 93% conversion and 95% butyl-levulinate selectivity.
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Affiliation(s)
- P. P. Neethu
- Inorganic Materials & Heterogeneous Catalysis Laboratory, Department of Chemistry, School of Physical Sciences, Central University of Kerala, Sabarmati Building, Tejaswini Hills, Periya P.O. Kasaragod 671320, Kerala, India
| | - A. Sakthivel
- Inorganic Materials & Heterogeneous Catalysis Laboratory, Department of Chemistry, School of Physical Sciences, Central University of Kerala, Sabarmati Building, Tejaswini Hills, Periya P.O. Kasaragod 671320, Kerala, India
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5
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Everaert M, Smolders E, McLaughlin MJ, Andelkovic I, Smolders S, Degryse F. Layered Double Hydroxides as Slow-Release Fertilizer Compounds for the Micronutrient Molybdenum. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2021; 69:14501-14511. [PMID: 34809425 DOI: 10.1021/acs.jafc.1c06056] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
Molybdenum (Mo) is an essential plant micronutrient. Despite low plant Mo requirements, deficiencies are not uncommon and soluble Mo fertilizers are often applied. However, soluble Mo may result in poor Mo use efficiency due to strong sorption (acid weathered soils) or leaching (lighter-textured soils). Here, ZnAl layered double hydroxides (LDHs), loaded with molybdate (MoO4), were examined for their potential as slow-release Mo compounds. Chloride-exchanged LDHs with varying Zn/Al ratios (2, 3, and 4) were exchanged with MoO4. Zn2Al LDH indicated MoO4 intercalation, whereas Zn3Al and Zn4Al LDHs bound MoO4 merely on edge sites. Short-term Mo-LDH incubation identified sulfate, carbonate, and phosphate as the most competitive anions for MoO4 exchange. Long-term Mo-LDH incubation in simulated pH-neutral soil solutions demonstrated slow Mo release from Zn2Al LDH (half-life of 35 h), with a total Mo desorption of up to 85%. For Zn3Al and Zn4Al LDHs, Mo desorption was limited to <20%. Finally, several macronutrient fertilizers were tested as possible carriers for Mo-LDH fertilizer compounds.
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Affiliation(s)
- Maarten Everaert
- Division of Soil and Water Management, Department of Earth and Environmental Science, KU Leuven, Kasteelpark Arenberg 20, B-3001 Heverlee, Belgium
| | - Erik Smolders
- Division of Soil and Water Management, Department of Earth and Environmental Science, KU Leuven, Kasteelpark Arenberg 20, B-3001 Heverlee, Belgium
| | - Mike J McLaughlin
- School of Agriculture, Food and Wine, The University of Adelaide, PMB 1, Waite Campus, Glen Osmond, SA 5064, Australia
| | - Ivan Andelkovic
- School of Agriculture, Food and Wine, The University of Adelaide, PMB 1, Waite Campus, Glen Osmond, SA 5064, Australia
| | - Simon Smolders
- Centre for Membrane Separations, Adsorption, Catalysis and Spectroscopy for Sustainable Solutions (cMACS), KU Leuven, Celestijnenlaan 200F, 3001 Leuven, Belgium
| | - Fien Degryse
- School of Agriculture, Food and Wine, The University of Adelaide, PMB 1, Waite Campus, Glen Osmond, SA 5064, Australia
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6
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Choumane R, Carpentier V, Lefèvre G. Extraction of polyoxotantalate by Mg-Fe layered double hydroxides: elucidation of sorption mechanisms. RSC Adv 2021; 11:36951-36957. [PMID: 35494365 PMCID: PMC9043620 DOI: 10.1039/d1ra07383d] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/04/2021] [Accepted: 11/04/2021] [Indexed: 11/26/2022] Open
Abstract
The extraction of Ta(v) as polyoxometallate species (H x Ta6O19 (8-x)-) using Mg-Fe based Layered Double Hydroxide (LDH) was evaluated using pristine material or after different pre-treatments. Thus, the uptake increased from 100 ± 5 mg g-1 to 604 ± 30 mg g-1, for respectively the carbonated LDH and after calcination at 400 °C. The uptake with calcined solid after its reconstruction with Cl- or NO3 - anions has also been studied. However, the expected exchange mechanism was not found by X-ray Diffraction analysis. On the contrary, an adsorption mechanism of Ta(v) on LDH was consistent with measurements of zeta potential, characterized by very negative values for a wide pH range. Moreover, another mechanism was identified as the main contributor to the uptake by calcinated LDH, even after its reconstruction with Cl- or NO3 -: the precipitation of Ta(v) with magnesium cations released from MgO formed by calcination of the LDH. This latter reaction has been confirmed by the comparison of the uptake of Ta(v) in dedicated experiments with solids characterized by a higher magnesium solubility (MgO and MgCl2). The obtained precipitate has been analyzed by X-ray diffraction (XRD) and would correspond to a magnesium (polyoxo)tantalate phase not yet referenced in the powder diffraction databases.
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Affiliation(s)
- Rana Choumane
- PSL University, Chimie ParisTech_CNRS, Institut de Recherche de Chimie Paris Paris 75005 France
| | - Victor Carpentier
- TND ZAC du Val de la Deûle, rue de la filature 59890 Quesnoy sûr Deûle France
| | - Grégory Lefèvre
- PSL University, Chimie ParisTech_CNRS, Institut de Recherche de Chimie Paris Paris 75005 France
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7
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Garbarino G, Phung TK, Pampararo G, Riani P, Busca G. Modification of the properties of γ-alumina as a support for nickel and molybdate catalysts by addition of silica. Catal Today 2021. [DOI: 10.1016/j.cattod.2021.02.016] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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8
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Dürr R, Maltoni P, Tian H, Jousselme B, Hammarström L, Edvinsson T. From NiMoO 4 to γ-NiOOH: Detecting the Active Catalyst Phase by Time Resolved in Situ and Operando Raman Spectroscopy. ACS NANO 2021; 15:13504-13515. [PMID: 34383485 PMCID: PMC8388116 DOI: 10.1021/acsnano.1c04126] [Citation(s) in RCA: 35] [Impact Index Per Article: 11.7] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/14/2021] [Accepted: 08/09/2021] [Indexed: 05/19/2023]
Abstract
Water electrolysis powered by renewable energies is a promising technology to produce sustainable fossil free fuels. The development and evaluation of effective catalysts are here imperative; however, due to the inclusion of elements with different redox properties and reactivity, these materials undergo dynamical changes and phase transformations during the reaction conditions. NiMoO4 is currently investigated among other metal oxides as a promising noble metal free catalyst for the oxygen evolution reaction. Here we show that at applied bias, NiMoO4·H2O transforms into γ-NiOOH. Time resolved operando Raman spectroscopy is utilized to follow the potential dependent phase transformation and is collaborated with elemental analysis of the electrolyte, confirming that molybdenum leaches out from the as-synthesized NiMoO4·H2O. Molybdenum leaching increases the surface coverage of exposed nickel sites, and this in combination with the formation of γ-NiOOH enlarges the amount of active sites of the catalyst, leading to high current densities. Additionally, we discovered different NiMoO4 nanostructures, nanoflowers, and nanorods, for which the relative ratio can be influenced by the heating ramp during the synthesis. With selective molybdenum etching we were able to assign the varying X-ray diffraction (XRD) pattern as well as Raman vibrations unambiguously to the two nanostructures, which were revealed to exhibit different stabilities in alkaline media by time-resolved in situ and operando Raman spectroscopy. We advocate that a similar approach can beneficially be applied to many other catalysts, unveiling their structural integrity, characterize the dynamic surface reformulation, and resolve any ambiguities in interpretations of the active catalyst phase.
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Affiliation(s)
- Robin
N. Dürr
- Department
of Chemistry, Physical Chemistry, Ångström Laboratory, Uppsala University, Box 523, 751 20 Uppsala, Sweden
| | - Pierfrancesco Maltoni
- Department
of Materials Science and Engineering, Solid State Physics, Ångström
Laboratory, Uppsala University, Box 35, 751 03 Uppsala, Sweden
| | - Haining Tian
- Department
of Chemistry, Physical Chemistry, Ångström Laboratory, Uppsala University, Box 523, 751 20 Uppsala, Sweden
| | - Bruno Jousselme
- Université
Paris-Saclay, CEA, CNRS, NIMBE, LICSEN, 91191 Gif-sur-Yvette, France
| | - Leif Hammarström
- Department
of Chemistry, Physical Chemistry, Ångström Laboratory, Uppsala University, Box 523, 751 20 Uppsala, Sweden
| | - Tomas Edvinsson
- Department
of Materials Science and Engineering, Solid State Physics, Ångström
Laboratory, Uppsala University, Box 35, 751 03 Uppsala, Sweden
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Petrus E, Segado M, Bo C. Nucleation mechanisms and speciation of metal oxide clusters. Chem Sci 2020; 11:8448-8456. [PMID: 34123104 PMCID: PMC8163382 DOI: 10.1039/d0sc03530k] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/26/2020] [Accepted: 07/31/2020] [Indexed: 11/24/2022] Open
Abstract
The self-assembly mechanisms of polyoxometalates (POMs) are still a matter of discussion owing to the difficult task of identifying all the chemical species and reactions involved. We present a new computational methodology that identifies the reaction mechanism for the formation of metal-oxide clusters and provides a speciation model from first-principles and in an automated manner. As a first example, we apply our method to the formation of octamolybdate. In our model, we include variables such as pH, temperature and ionic force because they have a determining effect on driving the reaction to a specific product. Making use of graphs, we set up and solved 2.8 × 105 multi-species chemical equilibrium (MSCE) non-linear equations and found which set of reactions fitted best with the experimental data available. The agreement between computed and experimental speciation diagrams is excellent. Furthermore, we discovered a strong linear dependence between DFT and empirical formation constants, which opens the door for a systematic rescaling.
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Affiliation(s)
- Enric Petrus
- Institute of Chemical Research of Catalonia (ICIQ), The Barcelona Institute of Science and Technology (BIST) Av. Països Catalans, 16 43007 Tarragona Spain
| | - Mireia Segado
- Institute of Chemical Research of Catalonia (ICIQ), The Barcelona Institute of Science and Technology (BIST) Av. Països Catalans, 16 43007 Tarragona Spain
| | - Carles Bo
- Institute of Chemical Research of Catalonia (ICIQ), The Barcelona Institute of Science and Technology (BIST) Av. Països Catalans, 16 43007 Tarragona Spain
- Departament de Química Física i Inorgánica, Universitat Rovira i Virgili Marcel·lí Domingo s/n 43007 Tarragona Spain
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10
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Gumerova NI, Rompel A. Polyoxometalates in solution: speciation under spotlight. Chem Soc Rev 2020; 49:7568-7601. [DOI: 10.1039/d0cs00392a] [Citation(s) in RCA: 111] [Impact Index Per Article: 27.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
The review covers stability and transformations of classical polyoxometalates in aqueous solutions and provides their ion-distribution diagrams over a wide pH range.
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Affiliation(s)
- Nadiia I. Gumerova
- Universität Wien
- Fakultät für Chemie
- Institut für Biophysikalische Chemie
- 1090 Vienna
- Austria
| | - Annette Rompel
- Universität Wien
- Fakultät für Chemie
- Institut für Biophysikalische Chemie
- 1090 Vienna
- Austria
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Highlights on the Catalytic Properties of Polyoxometalate-Intercalated Layered Double Hydroxides: A Review. Catalysts 2020. [DOI: 10.3390/catal10010057] [Citation(s) in RCA: 19] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/01/2023] Open
Abstract
Layered double hydroxides (LDH) are an extended class of two-dimensional anionic materials that are known for their unique lamellar structure, versatile composition, and tunable properties. The layered architecture allows the intercalation between the positively charged sheets of a vast variety of anionic species, including oxometalates and polyoxometalates (POM). The hybrid composites that were developed using POM and LDH show great advantages when compared to both parent materials causing the appearance of new functionalities, which may lead to remarkable contributions in many areas of application, especially in catalysis. The current review paper emphases all of the crucial works already existing in literature that are related to the large group of POM-LDH solids and their use as catalysts for fine organic synthesis. The new trends in the development of the POM-LDH catalysts are highlighted based on the overview of 121 scientific articles that were published between 1984 and 2019. The main topics are focused primarily on the synthesis, characterization, and the catalytic applications of different LDH systems hosting polyoxometalates with low, medium, and high nuclearity. The intense exploration of the POM-LDH field has led to the obtaining of countless effective catalysts used in various types of reactions, from condensation, esterification, halodecarboxylation, to oxidation and epoxidation.
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12
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Wang N, Zhou Y, Yousif S, Majima T, Zhu L. Hydrogen Bond between Molybdate and Glucose for the Formation of Carbon-Loaded MoS 2 Nanocomposites with High Electrochemical Performance. ACS APPLIED MATERIALS & INTERFACES 2019; 11:34430-34440. [PMID: 31460738 DOI: 10.1021/acsami.9b12013] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
The effects of glucose on the growth and surface properties of MoS2 with a nanosheet structure were investigated in detail. In the presence of glucose, the hydrothermal reaction of sodium molybdate and thiourea yields carbon-loaded MoS2 nanocomposites (C/MoS2). Compared with bare MoS2 nanosheets with more than six layers obtained in the absence of glucose and carbon spheres with a diameter of 500 nm prepared from the carbonization of glucose, C/MoS2 consists of one- or three-layered MoS2 and carbon spheres with a diameter less than 1 nm to give a large Brunauer-Emmett-Teller surface area (3-20 times larger than the individual materials). The surface characterizations reveal that both MoS2 and carbon spheres of C/MoS2 have a negative charge on the surface, suggesting that the previously reported explanation, in which the adsorption of MoS2 and/or molybdate ions on carbon spheres inhibits the growth and aggregation of MoS2, is not correct. Based on Fourier transform infrared and 1H NMR spectra, it is demonstrated that glucose acts as the hydrogen bond donor toward polyoxomolybdate species such as Mo8O264-, Mo7O246-, and MoO42- in the range of pH = 2-12. The intermolecular hydrogen bond not only inhibits the growth of both the (002) plane of MoS2 and carbon spheres, but also enables the formation of C-O-Mo bonds in the in situ generated C/MoS2. Compared with bare MoS2, C/MoS2 not only show a lower over-potential by 60 mV for the electrocatalytic evolution of hydrogen, but also has a larger mass specific capacitance by three times, due to the larger surface area and the interfacial interaction through the C-O-Mo bonds.
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Affiliation(s)
- Nan Wang
- Key Laboratory of Material Chemistry for Energy Conversion and Storage, Ministry of Education, School of Chemistry and Chemical Engineering , Huazhong University of Science and Technology , Wuhan 430074 , China
| | - Yuqi Zhou
- Key Laboratory of Material Chemistry for Energy Conversion and Storage, Ministry of Education, School of Chemistry and Chemical Engineering , Huazhong University of Science and Technology , Wuhan 430074 , China
| | - Sarmad Yousif
- Key Laboratory of Material Chemistry for Energy Conversion and Storage, Ministry of Education, School of Chemistry and Chemical Engineering , Huazhong University of Science and Technology , Wuhan 430074 , China
| | - Tetsuro Majima
- Key Laboratory of Material Chemistry for Energy Conversion and Storage, Ministry of Education, School of Chemistry and Chemical Engineering , Huazhong University of Science and Technology , Wuhan 430074 , China
| | - Lihua Zhu
- Key Laboratory of Material Chemistry for Energy Conversion and Storage, Ministry of Education, School of Chemistry and Chemical Engineering , Huazhong University of Science and Technology , Wuhan 430074 , China
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Chikkamath SS, Patil DM, Kabadagi AS, Tripathi VS, Kar AS, Manjanna J. Recovery of molybdenum by solvent extraction from simulated high level liquid waste. J Radioanal Nucl Chem 2019. [DOI: 10.1007/s10967-019-06640-4] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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14
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Chemical forms of molybdenum ion in nitric acid solution studied using liquid-phase X-ray absorption fine structure, Ultraviolet–Visible absorption spectroscopy and first-principles calculations. Chem Phys Lett 2019. [DOI: 10.1016/j.cplett.2019.02.049] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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15
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Wang H, Fan Q, Yang Z, Tang S, Chen J, Wu Y. A novel pre-sulfided hydrotreating catalyst derived from thiomolybdate intercalated NiAl LDHs. MOLECULAR CATALYSIS 2019. [DOI: 10.1016/j.mcat.2019.01.027] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
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16
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Steffler F, de Lima GF, Duarte HA. Polyoxomolybdate formation – A thermodynamic analysis from density functional/PCM calculations. Chem Phys Lett 2017. [DOI: 10.1016/j.cplett.2016.12.010] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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Mohapatra L, Patra D, Parida K, Zaidi SJ. Enhanced Photocatalytic Activity of a Molybdate-Intercalated Iron-Based Layered Double Hydroxide. Eur J Inorg Chem 2017. [DOI: 10.1002/ejic.201601191] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
| | | | - Kulamani Parida
- Centre for Nano Science and Nano Technology; ITER; Siksha “O” Anusandhan University; India
| | - Syed Javaid Zaidi
- Center for Advanced Materials (CAM); Qatar University (QU); Doha Qatar
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Charlot A, Dumas T, Solari PL, Cuer F, Grandjean A. A Spectroscopic Study of Uranium and Molybdenum Complexation within the Pore Channels of Hybrid Mesoporous Silica. Eur J Inorg Chem 2016. [DOI: 10.1002/ejic.201601085] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Alexandre Charlot
- CEA DEN DTDC SPDE Laboratoire des Procédés Supercritiques de Séparation 30207 Bagnols‐sur‐Cèze France
- CEA DEN DTDC SPDE Laboratoire de Développement des Procédés de Séparation 30207 Bagnols‐sur‐Cèze France
| | - Thomas Dumas
- CEA DEN DTDC SPDE Laboratoire d'Interaction Ligands Actinides 30207 Bagnols‐sur‐Cèze France
| | - Pier L. Solari
- Synchrotron SOLEIL L'Orme des Merisiers Saint‐Aubin, BP 48 91192 Gif‐sur‐Yvette Cedex France
| | - Frédéric Cuer
- CEA DEN DTDC SPDE Laboratoire de Développement des Procédés de Séparation 30207 Bagnols‐sur‐Cèze France
| | - Agnès Grandjean
- CEA DEN DTDC SPDE Laboratoire des Procédés Supercritiques de Séparation 30207 Bagnols‐sur‐Cèze France
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The H-bond network surrounding the pyranopterins modulates redox cooperativity in the molybdenum- bis PGD cofactor in arsenite oxidase. BIOCHIMICA ET BIOPHYSICA ACTA-BIOENERGETICS 2016; 1857:1353-1362. [DOI: 10.1016/j.bbabio.2016.05.003] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/09/2015] [Revised: 05/12/2016] [Accepted: 05/16/2016] [Indexed: 11/19/2022]
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Shkirskiy V, Keil P, Hintze-Bruening H, Leroux F, Vialat P, Lefèvre G, Ogle K, Volovitch P. Factors Affecting MoO4(2-) Inhibitor Release from Zn2Al Based Layered Double Hydroxide and Their Implication in Protecting Hot Dip Galvanized Steel by Means of Organic Coatings. ACS APPLIED MATERIALS & INTERFACES 2015; 7:25180-25192. [PMID: 26474129 DOI: 10.1021/acsami.5b06702] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
Zn2Al/-layered double hydroxide (LDH) with intercalated MoO4(2-) was investigated as a potential source of soluble molybdate inhibitor in anticorrosion coatings for hot dip galvanized steel (HDG). The effect of solution pH, soluble chlorides, and carbonates on the release kinetics of the interleaved MoO4(2-) ions from the LDH powder immersed in solutions containing different anions was studied by X-ray diffraction, in situ attenuated total reflectance infrared (ATR-IR) spectroscopy, and inductively coupled plasma atomic emission spectroscopy (ICP-AES). The effect of the solution composition on the total release and the release kinetics was demonstrated. Less than 30% of the total amount of the intercalated MoO4(2-) was released after 24 h of the immersion in neutral 0.005-0.5 M NaCl and 0.1 M NaNO3 solutions whereas the complete release of MoO4(2-) was observed after 1 h in 0.1 M NaHCO3 or Na2SO4 and in alkaline solutions. The in situ ATR-IR experiments and quantification of the released soluble species by ICP-AES demonstrated the release by an anion exchange in neutral solutions and by the dissolution of Zn2Al/-LDH in alkaline solutions. The anion exchange kinetics with monovalent anions was described by the reaction order n = 0.35 ± 0.05 suggesting the diffusion control; for divalent anions, n = 0.70 ± 0.06 suggested the control by a surface reaction. Dissolution of Zn from coated HDG with and without Zn2Al/-MoO4(2-) fillers, leaching of MoO4(2-) from the coating, and the electrochemical impedance spectroscopy response of the coated systems were measured during the immersion in 0.5 M NaCl solutions with and without 0.1 M NaHCO3. Without carbonates, the release of soluble MoO4(2-) was delayed for 24 h with no inhibiting effect whereas with 0.1 M NaHCO3 the immediate release was accompanied by the immediate and strong inhibiting effect on Zn dissolution. The concept of controlling the inhibition performance of LDH hybrid coatings by means of the environment composition is discussed.
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Affiliation(s)
- V Shkirskiy
- PSL Research University, Institut de Recherche Chimie Paris, CNRS - Chimie-ParisTech, 11 rue Pierre et Marie Curie, Paris 75005, France
| | - P Keil
- BASF Coatings GmbH , Glasuritstrasse 1, 48165 Münster, Germany
| | | | - F Leroux
- Clermont Université, Université Blaise Pascal, Institut de Chimie de Clermont-Ferrand (ICCF, UMR-CNRS 6296), BP 80026, F-63171 Aubiere, France
| | - P Vialat
- Clermont Université, Université Blaise Pascal, Institut de Chimie de Clermont-Ferrand (ICCF, UMR-CNRS 6296), BP 80026, F-63171 Aubiere, France
| | - G Lefèvre
- PSL Research University, Institut de Recherche Chimie Paris, CNRS - Chimie-ParisTech, 11 rue Pierre et Marie Curie, Paris 75005, France
| | - K Ogle
- PSL Research University, Institut de Recherche Chimie Paris, CNRS - Chimie-ParisTech, 11 rue Pierre et Marie Curie, Paris 75005, France
| | - P Volovitch
- PSL Research University, Institut de Recherche Chimie Paris, CNRS - Chimie-ParisTech, 11 rue Pierre et Marie Curie, Paris 75005, France
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